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\begin{abstract}
论文的摘要是对论文研究内容和成果的高度概括。摘要应对论文所研究的问题及其研究目的进行描述，对研究方法和过程进行简单介绍，对研究成果和所得结论进行概括。
摘要应具有独立性和自明性，其内容应包含与论文全文同等量的主要信息。使读者即使不阅读全文，通过摘要就能了解论文的总体内容和主要成果。
论文摘要的书写应力求精确、简明。切忌写成对论文书写内容进行提要的形式，尤其要避免“第1章……；第2章……；……”这种或类似的陈述方式

\end{abstract}

\keywords{形状记忆； 聚氨酯； 织物； 合成； 应用 （{\color{blue}{一般选3～8个单词或专业术语，且中英文关键词必须对应。}）}}

\begin{enabstract}
   An abstract of a dissertation is a summary and extraction of research work and contributions. Included in an abstract should be description of research topic and research objective, brief introduction to methodology and research process, and summarization of conclusion and contributions of the research. An abstract should be characterized by independence and clarity and carry identical information with the dissertation. It should be such that the general idea and major contributions of the dissertation are conveyed without reading the dissertation. 
\end{enabstract}

\enkeywords{shape memory properties; polyurethane; textile; synthesis; application}
